<!DOCTYPE html>
<html lang="en">
    <head>
        
        <meta charset="UTF-8">   
        <title>这是我的第一个VUE3.0应用</title>
        <script src="https://unpkg.com/vue@3.0.0-beta.17/dist/vue.global.js"></script>
    </head>
    <body>
        <div id="root">{{message}}</div>
        <script>
            const app=Vue.createApp({
                data(){
                    return {
                        message:"hello"
                    } 
                },
                methods:{}
            });
            const vm=app.mount("#root");
        </script>
    </body>
</html>